/*
 * Copyright (c) 2009 The University of Edinburgh
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Lei Zhang
 */

#include "arch/unicore/insts/integer.hh"

using namespace std;
using namespace UnicoreISA;

string
IntOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
    stringstream ss;
    bool printDest = true;
    bool printSecondSrc = true;

    // Generate the correct mnemonic
    string myMnemonic(mnemonic);
    
    // instructions updating AFR
    if (myMnemonic.rfind('a') == myMnemonic.length() - 1) {
        myMnemonic.replace(myMnemonic.rfind('a'), 1, ".a");
    }

    // Special cases
    // comparing instructions
    if (myMnemonic.find("cmp") != string::npos) {
        printDest = false;
        myMnemonic += ".a";
    } 
    // mula(multiply and add)
    else if (myMnemonic.find("mulc") != string::npos) {
        myMnemonic.replace(myMnemonic.find("mulc"), 4, "mula");
    }
    // cmovcc or cnotcc
    else if (myMnemonic.find("cmov") != string::npos ||
            myMnemonic.find("cnot") != string::npos) {
        string str_cond = getCondStr();
        myMnemonic.replace(4, 2, str_cond);
        printSecondSrc = false;
    }
    // mov or not
    else if (myMnemonic.find("mov") != string::npos ||
            myMnemonic.find("not") != string::npos) {
        printSecondSrc = false;
    }

    ccprintf(ss, "%-10s ", myMnemonic);

    // Print the first destination only
    if (_numDestRegs > 0 && printDest) {
        printReg(ss, _destRegIdx[0]);
    }

    // Print the (possibly) two source registers
    if (printDest) {
        ss << ", ";
    }
    printReg(ss, _srcRegIdx[0]);
    if (_numSrcRegs > 1 && printSecondSrc) {
        ss << ", ";
        printReg(ss, _srcRegIdx[1]);
    }

    return ss.str();
}


string
IntImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
    stringstream ss;
    bool printDest = true;
    bool printFirstSrc = true;
    
    // Generate the correct mnemonic
    string myMnemonic(mnemonic);
    // remove the appending 'i'
    myMnemonic = myMnemonic.substr(0, myMnemonic.length() - 1);
    
    // instructions updating AFR
    if (myMnemonic.rfind('a') == myMnemonic.length() - 1) {
        myMnemonic.replace(myMnemonic.rfind('a'), 1, ".a");
    }

    // Special cases
    // comparing instructions
    if (myMnemonic.find("cmp") != string::npos) {
        myMnemonic += ".a";
        printDest = false;
    } 
    // mula(multiply and add)
    else if (myMnemonic.find("mulc") != string::npos) {
        myMnemonic.replace(myMnemonic.find("mulc"), 4, "mula");
    }
    // cmovcc or cnotcc
    else if (myMnemonic.find("cmov") != string::npos ||
            myMnemonic.find("cnot") != string::npos) {
        string str_cond = getCondStr();
        myMnemonic.replace(4, 2, str_cond);
        printFirstSrc = false;
    }
    // mov or not
    else if (myMnemonic.find("mov") != string::npos ||
            myMnemonic.find("not") != string::npos) {
        printFirstSrc = false;
    }

    ccprintf(ss, "%-10s ", myMnemonic);

    // Print the first destination only
    if (_numDestRegs > 0 && printDest) {
        printReg(ss, _destRegIdx[0]);
    }

    // Print the (possibly) two source registers
    if (printFirstSrc) {
        if (printDest) {
            ss << ", ";
        }
        printReg(ss, _srcRegIdx[0]);
    }
    // Print the immediate
    ss << ", #" << (int32_t)imm;

    return ss.str();
}

